Merge branch 'for-linus-2' of git://git.linaro.org/people/rmk/linux-arm

[linux-2.6-block.git] / arch / arm / mm / mmu.c

diff --git a/arch/arm/mm/mmu.c b/arch/arm/mm/mmu.c
index 69bb735474fe32cf05840f72ae4b820458b3b1f5..e95a996ab78f6c7d995d859f6010ef5d8df471ed 100644 (file)
--- a/arch/arm/mm/mmu.c
+++ b/arch/arm/mm/mmu.c
@@ -57,6 +57,9 @@ static unsigned int cachepolicy __initdata = CPOLICY_WRITEBACK;
 static unsigned int ecc_mask __initdata = 0;
 pgprot_t pgprot_user;
 pgprot_t pgprot_kernel;
+pgprot_t pgprot_hyp_device;
+pgprot_t pgprot_s2;
+pgprot_t pgprot_s2_device;
 
 EXPORT_SYMBOL(pgprot_user);
 EXPORT_SYMBOL(pgprot_kernel);
@@ -66,34 +69,46 @@ struct cachepolicy {
        unsigned int    cr_mask;
        pmdval_t        pmd;
        pteval_t        pte;
+       pteval_t        pte_s2;
 };
 
+#ifdef CONFIG_ARM_LPAE
+#define s2_policy(policy)      policy
+#else
+#define s2_policy(policy)      0
+#endif
+
 static struct cachepolicy cache_policies[] __initdata = {
        {
                .policy         = "uncached",
                .cr_mask        = CR_W|CR_C,
                .pmd            = PMD_SECT_UNCACHED,
                .pte            = L_PTE_MT_UNCACHED,
+               .pte_s2         = s2_policy(L_PTE_S2_MT_UNCACHED),
        }, {
                .policy         = "buffered",
                .cr_mask        = CR_C,
                .pmd            = PMD_SECT_BUFFERED,
                .pte            = L_PTE_MT_BUFFERABLE,
+               .pte_s2         = s2_policy(L_PTE_S2_MT_UNCACHED),
        }, {
                .policy         = "writethrough",
                .cr_mask        = 0,
                .pmd            = PMD_SECT_WT,
                .pte            = L_PTE_MT_WRITETHROUGH,
+               .pte_s2         = s2_policy(L_PTE_S2_MT_WRITETHROUGH),
        }, {
                .policy         = "writeback",
                .cr_mask        = 0,
                .pmd            = PMD_SECT_WB,
                .pte            = L_PTE_MT_WRITEBACK,
+               .pte_s2         = s2_policy(L_PTE_S2_MT_WRITEBACK),
        }, {
                .policy         = "writealloc",
                .cr_mask        = 0,
                .pmd            = PMD_SECT_WBWA,
                .pte            = L_PTE_MT_WRITEALLOC,
+               .pte_s2         = s2_policy(L_PTE_S2_MT_WRITEBACK),
        }
 };
 
@@ -310,6 +325,7 @@ static void __init build_mem_type_table(void)
        struct cachepolicy *cp;
        unsigned int cr = get_cr();
        pteval_t user_pgprot, kern_pgprot, vecs_pgprot;
+       pteval_t hyp_device_pgprot, s2_pgprot, s2_device_pgprot;
        int cpu_arch = cpu_architecture();
        int i;
 
@@ -421,6 +437,8 @@ static void __init build_mem_type_table(void)
         */
        cp = &cache_policies[cachepolicy];
        vecs_pgprot = kern_pgprot = user_pgprot = cp->pte;
+       s2_pgprot = cp->pte_s2;
+       hyp_device_pgprot = s2_device_pgprot = mem_types[MT_DEVICE].prot_pte;
 
        /*
         * ARMv6 and above have extended page tables.
@@ -444,6 +462,7 @@ static void __init build_mem_type_table(void)
                        user_pgprot |= L_PTE_SHARED;
                        kern_pgprot |= L_PTE_SHARED;
                        vecs_pgprot |= L_PTE_SHARED;
+                       s2_pgprot |= L_PTE_SHARED;
                        mem_types[MT_DEVICE_WC].prot_sect |= PMD_SECT_S;
                        mem_types[MT_DEVICE_WC].prot_pte |= L_PTE_SHARED;
                        mem_types[MT_DEVICE_CACHED].prot_sect |= PMD_SECT_S;
@@ -498,6 +517,9 @@ static void __init build_mem_type_table(void)
        pgprot_user   = __pgprot(L_PTE_PRESENT | L_PTE_YOUNG | user_pgprot);
        pgprot_kernel = __pgprot(L_PTE_PRESENT | L_PTE_YOUNG |
                                 L_PTE_DIRTY | kern_pgprot);
+       pgprot_s2  = __pgprot(L_PTE_PRESENT | L_PTE_YOUNG | s2_pgprot);
+       pgprot_s2_device  = __pgprot(s2_device_pgprot);
+       pgprot_hyp_device  = __pgprot(hyp_device_pgprot);
 
        mem_types[MT_LOW_VECTORS].prot_l1 |= ecc_mask;
        mem_types[MT_HIGH_VECTORS].prot_l1 |= ecc_mask;